61678156 has 6 divisors (see below), whose sum is σ = 107936780. Its totient is φ = 30839076.

The previous prime is 61678109. The next prime is 61678163. The reversal of 61678156 is 65187616.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7709766 + ... + 7709773.

Almost surely, 2^61678156 is an apocalyptic number.

It is an amenable number.

61678156 is a deficient number, since it is larger than the sum of its proper divisors (46258624).

61678156 is a wasteful number, since it uses less digits than its factorization.

61678156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15419543 (or 15419541 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 61678156 is about 7853.5441680811. The cubic root of 61678156 is about 395.1031210760.

The spelling of 61678156 in words is "sixty-one million, six hundred seventy-eight thousand, one hundred fifty-six".